The text says 'Thus the Maharaj was of generous disposition'. How does this description of Gajanan Maharaj's generosity connect to Sai Baba's actions in Shirdi?

The description you're referring to from Chapter 29 is about Sai Baba, not Gajanan Maharaj. The provided text makes no mention of Gajanan Maharaj. The title "Maharaj" is used in verse 8 to honor Sai Baba himself, whose generous disposition is the central theme of that passage. The preceding verses, specifically 4 through 7, establish this context by describing how "Sai Baba was a great saint - patient, generous, and self-controlled" and how he would liberally distribute money to pilgrims, the poor, and various performers who came to Shirdi. The narrative consistently attributes this generosity to Sai Baba, with no connection made to any other saint.